I just re-bought a classic purple Gamecube Controller after giving my old one to a cousin, and while holding this thing again I was reminded of how ergonomically well designed it is.
Its so comfy my hands just melt into it!!
The wide and curvy handles that fill your palms just right
The long, concave triggers that perfectly wrap along and around your fingers. That huge, inviting A button and sturdy stick
Besides the tiny D-pad and wierd feeling Z-button, I love everything about it (yeah, even the C-stick is cool). Its also very sturdy and feels very well built.
Bonus controller porn pic below because on top of all of this, its one fucking gorgeous looking controller IMO
I should point out that I skipped the Gamecube back in the day (PS2 only owner back then), and only slowly started catching up during this gen on the Wii. I had no idea it was so good.
I kinda wish they kept this general design on the WiiUs Pro controller instead of going the 360 route.
edit:
BONUS PIC 2
NGHHHH